The identification results show that it is a diamond ring, which means it is a diamond.

A circle describes the cutting shape of a diamond.

The total mass is the total weight of the diamond plus the ring holder.

Marking 0. 135CT means that the diamond is 0. 135 carats (13.5 minutes), but because it is a finished product, the exact weight of the diamond can't be determined (the diamond can't be disassembled and weighed), so it can only prove the marking of the inner wall of the diamond ring, which means that the certificate can't explain the exact weight of the diamond, so it is marked as weight.

The refractive index, properties, thermal conductivity and magnifying glass observation all proved the natural characteristics of the modified diamond.

Remarks: The symbol G 18K indicates that the inner wall of the ring is engraved with the symbol G 18K. This logo is made of 18K platinum diamond ring when it leaves the factory, but it is not the test result, because the appraisal result: G 18K platinum diamond ring is not written on the appraisal certificate.

GB/T 16552 and GB/T 16553 are the record numbers of national standards, 16552 is the appellation standard of jewelry and jade, and 16553 is the detection standard of jewelry and jade.

This is the relevant information to be explained and proved in this credit.

If you want to know the specific parameters of a diamond, you need a report on the identification parameters of the rough diamond (commonly known as the rough diamond certificate).

I hope you can understand my answer and help you.